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The average American eats 2,000 calories per day with a standard deviation of 500 calories. If this distribution follows a normal distribution, (a) 'What is

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The average American eats 2,000 calories per day with a standard deviation of 500 calories. If this distribution follows a normal distribution, (a) 'What is the probability that someone eats between 2,000 and 3,000 calories per day? (b) How many calories corresponds to the 70th percentile

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